The House of Representatives and the Senate of the United States: which one has more power?

The House of Representatives and the Senate of the United States have equal power but serve different roles:

Senate: Approves presidential nominations, ratifies treaties, conducts impeachment trials — including the impeachment of the president, but cannot initiate it on its own.

House of Representatives: Initiates tax legislation and is the only chamber that can start the impeachment process, including the impeachment of the president.

Both chambers: Must pass the same version of a bill for it to become law.

They balance each other in the system of checks and balances, with neither chamber being superior to the other.